- Fiodor Kuzmich Sologub
- Fiodorov, Yevgraf Stepanovich
- Fiodor Vasily'evich Konstantinov
- Fior
- Fiordland National Park
- Fiore
- Fiorentino Rosso
- FIP
- fipronil
- FIPS
- FIR
- fir
- FIRAS
- fire
- fire accident
- fire accident loss statistics
- fire administrative coercion
- fire administrative punishment
- fire alarm and fire fighting linkage system
- fire alarm and gas detector system
- fire alarm control units
- fire alarm indicating device
- fire alarm system
- fire alarm telephone
- fire and explosion accident of oil and gas pipeline